CAMBRIDGE LOWER SECONDARY MATHEMATICS 9: END OF UNIT 2 TEST ANSWERS

Stage 9 End of unit 2

Answers
1 a 45 [2]

b 0 [2]
c 72 [2]

2 a 6x + 2 [2]
b 2x2 + x [2]

3 a p12 [1]
b q6 [1]
c r 15 [1]
d 6t 5 [1]

4 a B 12x5 [1]
b C 10 y 6 [1]
1 8
c A k [1]
2
2 7
d C m [1]
3
3 −4
e D n [1]
2

5 a y2 + 8y + 15 [1]
b m2 − m − 2 [1]
c p2 − 8p + 15 [1]
d n2 − 16n + 64 [1]
e x2 − 4 [1]

3x
6 a [1]
5
y
b [1]
6

Cambridge Lower Secondary Mathematics 9 – Byrd, Byrd & Pearce © Cambridge University Press 2021 1
 CAMBRIDGE LOWER SECONDARY MATHEMATICS 9: END OF UNIT 2 TEST ANSWERS

2a + b
c [1]
8
4 a + 3b
d [1]
18
e 3x + 9 [1]

7 a T = 30 [2]
T
b i p= [1]
x
ii p = 6 [2]

y−c
8 a B x= [1]
3
b C x = 4( y + 2k ) [1]

c A x = 4ay – b [1]

9 a A = 4x2 + yz [2]

b A = 64 [2]
A − yz
c x= [2]
4
d x=4 [2]

[Total: 45 marks]

Cambridge Lower Secondary Mathematics 9 – Byrd, Byrd & Pearce © Cambridge University Press 2021 2